1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
/*
* ARM RealView Emulation Baseboard Interrupt Controller
*
* Copyright (c) 2006-2007 CodeSourcery.
* Written by Paul Brook
*
* This code is licenced under the GPL.
*/
#include "sysbus.h"
#define GIC_NIRQ 96
#define NCPU 1
/* Only a single "CPU" interface is present. */
static inline int
gic_get_current_cpu(void)
{
return 0;
}
#include "arm_gic.c"
typedef struct {
gic_state gic;
int iomemtype;
} RealViewGICState;
static uint32_t realview_gic_cpu_read(void *opaque, target_phys_addr_t offset)
{
gic_state *s = (gic_state *)opaque;
return gic_cpu_read(s, gic_get_current_cpu(), offset);
}
static void realview_gic_cpu_write(void *opaque, target_phys_addr_t offset,
uint32_t value)
{
gic_state *s = (gic_state *)opaque;
gic_cpu_write(s, gic_get_current_cpu(), offset, value);
}
static CPUReadMemoryFunc *realview_gic_cpu_readfn[] = {
realview_gic_cpu_read,
realview_gic_cpu_read,
realview_gic_cpu_read
};
static CPUWriteMemoryFunc *realview_gic_cpu_writefn[] = {
realview_gic_cpu_write,
realview_gic_cpu_write,
realview_gic_cpu_write
};
static void realview_gic_map(SysBusDevice *dev, target_phys_addr_t base)
{
RealViewGICState *s = FROM_SYSBUSGIC(RealViewGICState, dev);
cpu_register_physical_memory(base, 0x1000, s->iomemtype);
cpu_register_physical_memory(base + 0x1000, 0x1000, s->gic.iomemtype);
}
static void realview_gic_init(SysBusDevice *dev)
{
RealViewGICState *s = FROM_SYSBUSGIC(RealViewGICState, dev);
gic_init(&s->gic);
s->iomemtype = cpu_register_io_memory(realview_gic_cpu_readfn,
realview_gic_cpu_writefn, s);
sysbus_init_mmio_cb(dev, 0x2000, realview_gic_map);
}
static void realview_gic_register_devices(void)
{
sysbus_register_dev("realview_gic", sizeof(RealViewGICState),
realview_gic_init);
}
device_init(realview_gic_register_devices)
|
